Application of Digital Image Correlation (DIC) Method for Road Material Testing

Area of Science:

• Civil Engineering
• Materials Science
• Optical Metrology

Background:

• Digital Image Correlation (DIC) is a non-contact, non-interferometric optical method for measuring surface deformation.
• It is applicable to static and fatigue testing of structural elements and material samples.
• Traditional methods like tensometry have limitations in certain applications.

Purpose of the Study:

• To present the theoretical framework, advantages, and limitations of the DIC method.
• To describe the implementation of DIC for laboratory tests on building materials.
• To evaluate the potential of DIC for assessing the deformation of road construction materials.

Main Methods:

• Theoretical analysis of the Digital Image Correlation (DIC) technique.
• Experimental implementation of DIC for laboratory testing of various road construction materials.
• Comparison of DIC results with tensometric measurement methods.

Main Results:

• Demonstrated the applicability of DIC for measuring surface deformation in asphalt mixtures (HMA), stone, stabilized soil, and geosynthetics.
• Highlighted the advantages of DIC in evaluating the deformation of road materials, considering their specific properties.
• Identified specific areas where DIC offers significant advantages over tensometric methods.

Conclusions:

• The DIC method is a viable and advantageous tool for laboratory deformation analysis of road construction materials.
• DIC provides superior results compared to tensometry in specific applications involving diverse material samples.
• The study confirms the potential of DIC for detailed material characterization in civil engineering and road construction.